Panel fastener



FIG. 1 is a top front isometric view of a fastener showing our new design;

FIG 2 is a bottom front isometric view of FIG. 1;

FIG. 3 is a side elevational view of FIG. 1;

FIG. 4 is a top plan view of FIG. 1; and,

FIG. 5 is a bottom plan view of FIG. 1. 

The ornamental design for a panel fastener, as shown and described. 